/Engine/Plugins/Experimental/AnimNext/Source/AnimNext/Public/DataRegistry.h
Registers an anim data handle with arbitrary data using anFNameNote that AnimDataHandles are refcounted, so this makes them permanent until unregistered
void RegisterData ( const [FName](API\Runtime\Core\UObject\FName) & Id, const [FDataHandle](API\Plugins\AnimNext\FDataHandle) & AnimationDataHandle )